flicker



(No Model.) 2 Sheets-Sheet 1.

F. G. FEIGKER. MACHINE FOR GRINDING GUTLERY AND OTHER HANDLES.

Patented Aug. 23, 1892.

(No Model.) 2 Sheets-Sheet 2.

' F. O. FEICKER.

MACHINE FOR GRINDING GUTLERY AND OTHER HANDLES- Patented Aug. 23, 1-892.

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UNITED STATES 'ATENT Orrrcn.

FREDRICK C. FEICKER, OF NORTHAMPTON, MASSACHUSETTS, ASSIGNOR TO THENORTHAMPTON CUTLERY COMPANY, OF-SAME PLACE.

MACHINE FOR GRINDING CUTLERY AND OTHER HANDLES.

SPECIFICATION forming part of Letters Patent No. 481,259, dated August23, 1892.

Application filed February 6,1892. Serial No. 420,598. (No model.)

To all whom it may concern.-

Be it known that I, FREDRIOK (J. FEICKEB, a citizen of the UnitedStates, residing at Northampton, in the county of Hampshire and State ofMassachusetts, have invented new and useful Improvements in Machines forGrinding Cutlery and other Handles, of which the following is aspecification.

This invention relates to improvements in IQ machines for grindingcutlery and other handles, which, as well known, as provided for knivesand forks, are composed of metal, or metal and bone, or other materialor materials.

The purpose of the invention is toprovide I 5 improved devices in agrinding-machine for grasping the knife or fork and for insuring rotaryand bodily swinging movements thereof, whereby the handle may beproperly and automatically presented to the grinding action of thewheel.

Another object of the invention is the provision of an improvedadjustable tool-holder, which is adapted to receive and properly presentto the grinding action handles of vary- 2 5 ing lengths.

The invention consists in the combination or arrangement ofinstrumentalities and the construction of parts, all substantially aswill hereinafter more fully appear, and be pointed out in the claims.

Referring to the accompanying drawings, Figure l is an end elevation ofthe machine. Fig. 2 is a plan thereof. Fig. 3 is in part a perspectiveand in part an axial section of an approved form of one of thework-holding devices. Fig. 4 is a perspective view of one of" thework-holding devices, showing the sepa rable clamping-jaws. Fig. 5 is aperspective View of one of the removable cams or formers.

4 Fig. 6 is a view in perspective of supports and bearings for one ofthe work-holding devices and the shaft which is geared thereto, and Fig.7 is a view in perspective of parts which constitute rocking devices forthe work-holder support.

In the drawings, A represents the table or main support of the machine,and B the grinding-wheel, with the rim or grinding-surface thereofusually of a width as great as the length of the handle to be ground,the said wheel being supported on an arbor or shaft I), mounted injournal-bearings a and driven by belt through the pulley cl orotherwise.

C C represent work-holding devices, which are mounted in orsubstantially in longitudinal alignment upon the frame D,which'constitutes the work-holder support. The said frame embodies thehorizontal bar 0, ranging in front of and across the face of thegrinding-wheel, and the bar 0 which is formed on or rigidly connected tothe horizontal bar, the same standing in a more or less nearly-uprightposition and having the separated inwardly-extended lugs or bracketmembers 0 c suitably bored or socketed to receive the hardened blocks 0c, which are held in place by the set-screws c and having in the faces,which are toward each other, conical bearings for the extremities of theshaft 6. The said shaft 6 has the rigid right-angularly-extended andaxially-aligned members 6 the extremities of which are formed conicaland have bearings in the hardened pieces f which are by the screws fheld in sockets of the separated uprights f f, that are mounted on thetable in front of the grinding-wheel. The supporting-frame for thework-holder therefore has a swinging or oscillating motion from thepivotal support, constituted by the upright f and members e2 6 towardand from the grinding-face of the wheel, and also has a secondaryswinging motion, so that the axis of the handle or part to be ground andsupported longitudinally parallel with the top bar 0 may be maintainedata slight angle to 8 the grinding-face of the wheel, which slight anglemay correspond to the endwise taper of the handle, whereby the whole orgreater portion of the length of the handle will be presented againstthe wheel. One of the workholding members has its work-engaging extremity socketed or of cup form, as indicated at g, while the other hasits extremity in the form of the separable jaws 7L. Each of thework-engaging portions is carried at the extremity of a spindle orshaftj, which passes loosely through and beyond a sleeve 1', whichsleeve has its intermediate portion fitted for rotation in thejournal-bearing 70, which is mounted upon auextremity of the upperbar100 c of the work-holder-snpporting frame. The shaft or spindle has itsend portion, which is adjacent and also projected outwardly beyond thesleeve, screw-threaded, as shown, and while said spindle is capable ofan endwise movement under the proper conditions through the sleeve it isconstrained to rotate with the sleeve, and this capability is readilyimparted by forming the spline-groove j in the intermediate portion ofthe spindle and setting the screw or pin j through the wall of thesleeve to have its point enter said groove. The sleeve is shoulderednext to the inner end of the bearing 70, whereby endwise motion in onedirection is prevented, the gearwheel m, which is keyed on the sleevenext to the other end of the bearing, preventing the endwise movement ofthe sleeve in the other direction. A nutfhas a screw engagement with thesaid spindle j, and while this nut may have a rotational movementindependent of the sleeve it is confined against any endwisemovement-this by reason of the pin 7' which passes laterally through theannular flangej of the 'nut which surrounds the extremity of the sleeveengaging the annular groove 7' in the sleeve extremity. Of course anyrotational movement of the nut will force the spindlej longitudinally,and therefore the work-engaging appliances g It may be adjusted in anyextent of separation.

The separable jaws of the holder h have spring capabilities for outwarddistention and have their extremities provided with the membershisuitably formed to eftectivelygrasp the tang ofthe fork or the shankof the bladeon the contraction of the spring-jaws, the outer surfaces ofwhich are inclined or cam-formed,by the slide ring 723, the blade of theimplement being permitted to extend within the said clamping-jaws. Theshaft E is horizontally mounted above and along thetop of theoscillating frame having bearings in the journals 3' Said shaft has thegears m m thereon, which are in mesh with the aforementioned gears mm,the crank arm and handle m being also provided for said shaft for itsconvenient rotation. The springs q q are applied for normallymaintaining the workholder support swung toward the grindingwheel, therebeing provided for the withdrawal of said support the treadle g and aflexible connection g connected thereto and to the pending arm 0 of theupright member of the support. The flexible connection has itsintermediate portion passed over the guidesheave The swinging of thesupport for the work-holder is usually intended to be antomaticallycontrolled and regulated consequent upon the conjoint rotation with oneor both of thework-holders of oneor more cams or formers n, (which havecross-sectional contour corresponding to that of the handle to beground,) in conjunction with studs or abutment-pieces p, which areadapted to be fixed in proper adjacent positions corresponding to theparticular work in hand. Each former here shown is axially bored andtapped, having a screw engagement upon the screwthreaded extremity i ofthe sleeve 2', embodied in the work-holder. Each abutment-stud p isconstituted by the verticalmember of an angle-piece, the horizontalmembers of the pair of which are screw-threaded and extended, in planessubstantially parallel with the rotation of the grinding-wheel, adjustably through the separated posts o which latter, as shown and as arepreferably to be formed, have the slotted foot-pieces r r held inconfinement upon the table by the said screws or bolts r all so that theposts maybe adjusted toward and from each other and in a line parallelwith the length of the article to be ground.

The journals a a, in which the arbor of the grinding-wheel is mounted,are supported at the upper portions of arms a which are pivotallyconnected, as at a to lugs a of the table A. To anintermediate portionof one of said arms a a bar a is pivotally connected, which bar thenceforwardly extends horizontally through an aperture in a standard a,which is bolted upon the table. The nuts 0. a screw engage the said bara at either side of the upright. By loosening the outer nut the journalsand grinding-wheel may be rearwardly swung clear from the mechanism atthe front of the table to permit of the removal or substitution of thegrinding-wheel, and

again by loosening one and setting up the other of the nuts 0, a thegrinding-wheel may have bodily a forward or rearward ad j ustment, asmay be desirable, in addition to the capabilities for adjustmentimparted by the described mounting of the frame D and the abutment-postswhich are impinged upon by the former-cams.

The operation of the machine becomes manifest on a consideration of theconstruction and arrangement for conjoint action of the parts andappliances described; but it will be briefly mentioned that for grindingthe handle of a knife or fork of given dimensions after the machine hasbeen adjusted therefor the operative has merely to depress the treadle,withdrawing the work-holding devices from adjacent the grinding-wheel,to then place the butt-end of the handle in the cup-like socket andslide the tang laterally between the separable jaws, and then slide upthe clamp ing-ring (which is understood as having been already slid intoits disengaging position) and release the pressure on the treadle, whenthe handle will be properly presented against the grinding-face of theWheel. The shaft E is slowly turned by means of the hand-crank as thegrinding progresses, presenting new surfaces of the handle to be ground.No skill or care is required in the operation of the machine, for it isapparent that the handle will be ground to a form as predetermined inthe provision of the cam of the desired contour.

The machine is adaptable for utilization in the manner already renderedplain for the grinding of cutlery and other handles having a wide rangeof modification, so far as concerns longitudinal and transversaldimensions and degree of taper.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

1. In a grinding-machine, the combination, with the grindingwheel, of awork-holder support pivotally mounted to have a swinging movement towardand from the face of the grinding-wheel, the work-holder rotatablymounted thereon and means for imparting rotation thereto, a spring forforcing the said support toward the wheel, and a treadle having aflexible connection extended therefrom to an engagement with the supportfor withdrawing the latter from the grinding-Wheel, substantially asdescribed.

2. In a grinding-machine, the combination, with a table having supportsfor the grindingwheel and a pair of separated uprights, of a work-holdersupport having parallel separated brackets, a bar or member having itsextremities in engagement with said brackets, whereby there may be arotational movement of the bracketed holder relative to the bar and saidbar being provided with rigid members extended therefrom at right anglesto its length and mounted for a rocking movement in said separateduprights, and the workholder mounted on the said support, substantiallyas described.

3. In a machine for grinding cutlery and other handles, the combination,with a grinding-Wheel and a work-holder support which is movable towardand from the face of the grinding-wheel, of separated work-holdersmounted on said support thereof, comprising a bearing or journal, asleeve therein constrained against endwise movement, a screwshaftthrough the sleeve, having one extremityadapted to engage the article tobe worked upon and free for an endwise movement relative to the sleeve,but constrained against rotation, a nut-screw engaging the saidscrewshaft and having an engagement with said sleeve, whereby there maybe no movement H V ,7

axially of the one relative to the other, but whereby they mayindependently rotate, and means for imparting rotation to the sleeve,substantially as described.

4. In a machine for grinding cutlery and other handles, the combination,with a grinding-wheel and a movable support, of separated work-holderson said support, one comprising a journal-bearing, a sleeve rotatablethereon, having a shoulder at one end of the bearing and a gear-wheel atthe other, and the sleeve also having the peripherally groovedextremity, the splinegrooved and screw threaded shaft passed through thesleeve and having at its one end a handle-engaging member, the nutengaging the shaft and provided with the annular flange, the pin 7' andthe pin 7' all arranged as and for the purposes set forth.

FREDRIOK O. FEIOKER.

Witnesses:

WM. S. BELLOWS, J. D. GARFIELD.

